21141001042 has 64 divisors (see below), whose sum is σ = 37462233600. Its totient is φ = 8761996800.

The previous prime is 21141001039. The next prime is 21141001099. The reversal of 21141001042 is 24010014112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11250259 + ... + 11252137.

It is an arithmetic number, because the mean of its divisors is an integer number (585347400).

Almost surely, 2^21141001042 is an apocalyptic number.

21141001042 is a deficient number, since it is larger than the sum of its proper divisors (16321232558).

21141001042 is a wasteful number, since it uses less digits than its factorization.

21141001042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21141001042 its reverse (24010014112), we get a palindrome (45151015154).

The spelling of 21141001042 in words is "twenty-one billion, one hundred forty-one million, one thousand, forty-two".